1. Research Scientist, Computational Science Center, National Renewable Energy Laboratory, 15013 Denver W. Pkwy., Golden, CO 80401 (corresponding author).
2. Senior Scientist, Computational Science Center, National Renewable Energy Laboratory, 15013 Denver W. Pkwy., Golden, CO 80401.
3. Associate Research Scientist, Dept. of Civil Engineering and Engineering Mechanics, Columbia Univ., 610 Seeley W. Mudd 500 West 120th St., New York, NY 10027.
4. Associate Professor, Dept. of Civil Engineering and Engineering Mechanics, Columbia Univ., 610 Seeley W. Mudd 500 West 120th St., New York, NY 10027.